SOLUTION: After a sailboat had been on the water for 4 h, a change in the wind direction reduced the average speed of the boat by 2 mph. The entire distance sailed was 78 mi. The total time

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Question 807546: After a sailboat had been on the water for 4 h, a change in the wind direction reduced the average speed of the boat by 2 mph. The entire distance sailed was 78 mi. The total time spent sailing was 7 h. How far did the sailboat travel in the first 4 h?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
4x+3(x-2)=78
4x+3x-6=78
7x-6=78
7x=84
x = 12
4*12=48 miles first 4 hr
3*10=30 miles last 3 hours